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Title: A new way to describe the transition characteristics of a rotating-disk boundary-layer flow
Authors: Imayama, S
Alfredsson, PH
Lingwood, RJ
Keywords: Transducers;Atmospheric thermodynamics;Anemometer;Linear filters;Probability theory;Aerodynamics
Issue Date: 2012
Publisher: AIP Publishing
Citation: Physics of Fluids, 2012, 24 (3)
Abstract: A new method of graphically representing the transition stages of a rotating-disk flow is presented. The probability density function contour map of the fluctuating azimuthal disturbance velocity is used to show the characteristics of the boundarylayer flow over the rotating disk as a function of Reynolds numbers. Compared with the variation of the disturbance amplitude (rms) or spectral distribution, this map more clearly shows the changing flow characteristics through the laminar, transitional, and turbulent regions. This method may also be useful to characterize the different stages in the transition process not only for the rotating-disk flow but also for other flows.
ISSN: 1070-6631
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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